The mass shooting at Stoneman Douglas High School killed 17 people in Parkland, Fla. on Feb. 14.

More than 600 copycat school shooting threats have been made across the country — just two weeks after a gunman killed 17 people and wounded over a dozen at a Florida high school last month, data shows.

Texas had the most threats with 55 reports, Ohio had 47, California received 37, Florida had 35 and 32 reports were made in Pennsylvania, USA Today reported citing data from the Educator's School Safety Network.

The group found 638 threats were made after the Valentine’s Day massacre at Marjory Stoneman Douglas High School in Parkland, Fla.

The threats prompted 33 school closings and 15 lockdowns, according to a USA Today review of the incidents.

Experts say students don’t measure the consequences of making threats whether they're made verbally or online.

“Everyone knows you don't say 'bomb' in an airport. We have to get to that point with kids on this issue,” Amanda Klinger, director of operations for the Educator's School Safety Network, told USA Today. “We need to make it clear that this isn't OK, and it is incredibly serious.”

The threats have led to dozens of arrests, which Nova Southeastern University psychology Prof. Scott Poland previously told the Daily News stem from the national coverage of school shootings.

President Trump proposed arming teachers to protect students from mass shootings, but Democrats, Republicans and educators have opposed the idea.